I'm sorry but, I don't have the PMDG 777 for P3D, so I tried it with the Aerosoft A321 and the default A321, at EDDG gate C5 and C8, and no crashes of any kind.
I have the PMDG 777 for FSX:SE, tried at gate C8, and no crashes either.
Do you have crashes with a default airplane in P3D, at the same gates ?